rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=7c0c/1/0x4000000000000000 softirq=15215/15215 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=10817, q=415 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6495 Comm: syz.4.108 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x55/0xb0 kernel/rcu/tree.c:737
Code: ba 2e 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 fc c0 80 00 48 c7 c3 d8 7c 03 00 49 03 1e 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 22 8b 03 65 ff 0d 11 e2 7e 7e 74 10 83 e0
RSP: 0018:ffffc90000007d20 EFLAGS: 00000802
RAX: 1ffff110170c6f9b RBX: ffff8880b8637cd8 RCX: ffffffff818cc050
RDX: ffff8880257d1e00 RSI: ffffffff8c5fbe60 RDI: ffffffff8c5fbe20
RBP: ffffc90000007ea0 R08: ffffffff818cc076 R09: 1ffffffff2033b36
R10: dffffc0000000000 R11: fffffbfff2033b37 R12: 1ffff110170c593b
R13: 0000000000000001 R14: ffffffff8e2eba90 R15: dffffc0000000000
FS:  00007fc406e216c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000007d38a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_hrtimer_expire_exit include/trace/events/timer.h:306 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1742 [inline]
 __hrtimer_run_queues+0x630/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188
Code: 62 13 08 8e e8 1c 76 e3 ff 90 0f 0b 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc9000ff0f678 EFLAGS: 00000246
RAX: 1ffffd400028f801 RBX: ffffea000147c000 RCX: ffffffff81f6cdd3
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea000147c000
RBP: ffffea000147c008 R08: ffffea000147c007 R09: 1ffffd400028f800
R10: dffffc0000000000 R11: fffff9400028f801 R12: 0000000000003fc0
R13: 0000000000000100 R14: ffffea000147c001 R15: 0000000000000008
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 folio_test_head include/linux/page-flags.h:824 [inline]
 folio_test_large include/linux/page-flags.h:845 [inline]
 folio_set_order mm/internal.h:679 [inline]
 prep_compound_head mm/internal.h:718 [inline]
 prep_compound_page+0x183/0x570 mm/page_alloc.c:574
 prep_new_page mm/page_alloc.c:1560 [inline]
 get_page_from_freelist+0x3674/0x37a0 mm/page_alloc.c:3475
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4752
 alloc_pages_mpol+0x30e/0x550 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2340 [inline]
 alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2360
 io_mem_alloc_compound io_uring/memmap.c:29 [inline]
 io_region_allocate_pages+0xe3/0x4a0 io_uring/memmap.c:167
 io_create_region+0x36e/0x470 io_uring/memmap.c:223
 io_allocate_scq_urings+0x2d8/0x910 io_uring/io_uring.c:3473
 io_uring_create+0x5b5/0xc00 io_uring/io_uring.c:3695
 io_uring_setup io_uring/io_uring.c:3784 [inline]
 __do_sys_io_uring_setup io_uring/io_uring.c:3811 [inline]
 __se_sys_io_uring_setup+0x2ba/0x330 io_uring/io_uring.c:3805
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc405f7fed9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc406e21058 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9
RAX: ffffffffffffffda RBX: 00007fc406145fa0 RCX: 00007fc405f7fed9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 000000000000311e
RBP: 00007fc405ff3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc406145fa0 R15: 00007ffef3a23bb8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g10817 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=4338
rcu: rcu_preempt kthread starved for 10502 jiffies! g10817 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:26072 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5371 [inline]
 __schedule+0x189f/0x4c80 kernel/sched/core.c:6758
 __schedule_loop kernel/sched/core.c:6835 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6850
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>